Paris Jackson was left with emotional problems after giving evidence in her father’s death trial, bother Prince has revealed.

In the months before her attempted suicide Paris gave a filmed deposition which her brother said was painful for her.

"I think out of all of my siblings she was probably hit the hardest because she was my dad's princess," he said.

Prince said the questioning of Paris by AEG Live lawyers was painful for her. "She had some problems before, after and, I assume, during," he said.

(Image: Splash)

His testimony began with the teenager showing jurors roughly 15 minutes of private family photos and home videos.

He described growing up on Neverland Ranch and narrated videos of the property's petting zoos, amusement park and other amenities. After his father's acquittal of child molestation charges, Prince described living in the Middle East, Ireland and Las Vegas.

Heartbreaking home video showing Michael Jackson teaching his children to sing on Christmas day has been released - scroll down to watch.

"Help the poor," she answered. Paris also said she would like to be a gymnast.

Prince is the first Jackson family member to testify during the trial, now in its ninth week.

(Image: REUTERS)

Prince, his sister Paris-Michael Katherine Jackson and brother Prince Michael "Blanket" Jackson are plaintiffs in the case against AEG, which their grandmother and primary caretaker filed in August 2010.

Prince's lawyer Brian Panish asked Prince whether he was interested in pursuing a career in music. "I can never play an instrument and I definitely cannot sing," Prince said to laughter from the jury.

He said he wanted to study film or business when he goes to college.

His testimony also included details that AEG's lawyers will likely point to later in the case to bolster their contention that Jackson was secretive about using propofol as a sleep aid.

Prince said none of the household staff were allowed upstairs at the mansion, and the singer kept his bedroom locked while receiving treatments from Murray.

During cross-examination, Putnam played a clip from a deposition of Prince in which the teen said he discovered the bedroom was locked when he and his siblings were playing hide-and-seek and couldn't get inside.